American journal of human biology : the official journal of the Human Biology Council
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Thicknesses of subcutaneous fat tissue at 13 sites (triceps, biceps, forearm, subscapular, abdomen, suprailiac, axilla, chest, quadriceps, suprapatellar, hamstrings, posterior calf, medial calf), and muscle tissue at nine sites (triceps, biceps, forearm, subscapular, abdomen, quadriceps, suprapatellar, hamstrings, posterior calf) were determined by using the B-mode ultrasound technique. Subjects were 36 young (18-29 years) and 44 middle-aged women (45-64 years). Body density averaged 1.047 ± 0.007 g · ml-1 (SD) for the young, and 1.022 ± 0.005 g · ml-1 for the middle-aged women. ⋯ J. Hum. Biol. 9:247-255, 1997. © 1997 Wiley-Liss, Inc.